What's more, Olson said the IRS told its telephone representatives not to tell callers the reason for the delay.

Obamacare enrollees received subsidies based on their estimated income for 2014. Now that they know their actual income, the IRS has to make sure the initial subsidy amount was correct.

Some enrollees will have to pay back part of their subsidies or receive smaller refunds if they underestimated their incomes. Others may get larger refunds if they earned less than they anticipated.

The IRS needs to get the 1095-A forms, which includes the subsidy data, from the state exchanges to confirm the information taxpayers put on their return is correct.

Olson's comments are the latest headache for Obamacare enrollees and the Obama administration. Last month, administration officials said that 800,000 enrollees received incorrect 1095-A forms. That forced the majority of them to delay filing their tax returns until they get updated forms. (Some 50,000 people who had already sent in their returns will not have to amend them.)

Also, scores of people who paid a penalty for remaining uninsured in 2014 told CNNMoney that their refunds were delayed.

The IRS told CNNMoney that early this filing season, some tax returns that include Obamacare subsidies were briefly held for additional review. The agency said that as of last week, it is either processing these returns or reaching out to taxpayers to obtain additional information.

The agency said it is seeing a normal volume of returns being held. The IRS issues more than 90% of refunds within 21 days of the tax return being accepted.

Through Feb. 20, it has processed nearly 50 million tax returns. Almost 40 million tax refunds worth a total of nearly $125 billion have been issued.

In his new role, Divac, a former Kings player, will serve as an adviser to the front office and coaching staff, assist in talent evaluation and work to build relationships with European players, shepherd global branding efforts and fan outreach initiatives, and overse player development programs.

Divac returns to Sacramento after a decade of working in administrative and leadership roles across the globe. He retired an NBA player after the 2007 season.

"With an unparalleled philanthropic track record that spans the globe, Vlade Divac is the epitome of our NBA 3.0 philosophy," Kings owner Vivek Ranadive said. "He has a unique perspective and global stature that will only further elevate our organization around the world."

In 2009, the 47-year-old Divac was named the president of the Serbian Olympic Committee in his native country. He also has been involved in helping children in Serbia and in other parts of the world.

"It's a great honor returning to the city that has provided a lifetime of unforgettable experiences," Divac said. "Sacramento and the Kings' organization were always in my thoughts and I often dreamed of having a role in helping our amazing fans realize the ultimate NBA prize. I'm thankful to Vivek for the opportunity and look forward to creating more special memories here."

In 16 NBA seasons, Divac averaged 11.8 points, 8.2 rebounds, 3.1 assists and 1.4 blocked shots in 1,134 games for the Los Angeles Lakers, Charlotte and Sacramento. He is one of four players in league history along with Kareem Abdul-Jabbar, Hakeem Olajuwon and Kevin Garnett with 13,000 points, 9,000 rebounds, 1,200 steals and 1,600 blocked shots.

"Over the past year that I have gotten to know Vlade, he has proven himself as an ambassador to the Sacramento community," Kings general manager Pete D'alessandro said. "The organization is fortunate to have him as an advisor. I look forward to his contributions, especially with respect to his knowledge of the international game."

Oklahoma City Thunder point guard Russell Westbrook expects to play Wednesday against the Philadelphia 76ers.

Westbrook told Yahoo Sports that he would be back from a facial fracture that required surgery but intends to wear a protective mask. The team will not make the official decision on Westbrook's status until Wednesday.

Westbrook could be back but the Thunder will not have forward Kevin Durant, who is out for the seventh game in a row with a foot injury.

The Miami Heat signed forward Henry Walker to a second 10-day contract. Walker has appeared in five games since signing on Feb. 21, averaging 9.4 points, 3.2 rebounds, 1.0 assists and 24.7 minutes.

Walker has also averaged 15.1 points, 3.9 rebounds, 1.5 assists, 1.0 steals and 27.8 minutes while shooting 46.8 percent from the field and 44.8 percent from three-point range in 17 games for the Sioux Falls SkyForce, the Heat's NBA Development League affiliate, this season.

Forward Quincy Miller signed a second 10-day contract with the Detroit Pistons.

Miller has yet to appear in a game with the Pistons. He signed his first 10-day deal on Feb. 21.

In two games with the Grand Rapids Drive, Miller averaged 11.5 points, 9.0 rebounds, 2.0 assists and 1.0 blocks in 19.7 minutes per game. He recorded 15 points, 12 rebounds and three assists in 23 minutes vs. the Delaware 87ers.

In six games with the Sacramento Kings this season, Miller averaged 2.8 points, 2.0 rebounds, 1.0 steals and 10.2 minutes.

The Dallas Mavericks signed center Bernard James, who originally joined the team last month when Tyson Chandler was injured, for the remainder of the season.

The 6-foot-10 James was playing in China with the Shanghai Sharks when he signed the first of two 10-day contracts on Feb. 11 after Chandler went down. In five games for the Mavericks, James has started twice and is averaging 4.4 points, 4.4 rebounds and 1.8 blocked shots per game.

James, the No. 33 overall pick by the Mavericks in the 2012 NBA Draft, was also with Dallas during the preseason and averaged 2.6 points and 4.2 rebounds in five games before he was released.

In his third NBA season, all with the Mavs, James has played in 81 games and has career averages of 2.2 points and 2.4 rebounds.

Center Earl Barron signed a second 10-day contract with the Phoenix Suns on Tuesday.

Since signing his first 10-day contract on Feb. 21, Barron has averaged 1.6 points and 0.8 rebounds in limited action during five games.

The 33-year-old Barron was averaging 20.3 points and 10.9 rebounds for Bakersfield in the NBA Development League this season before he joined the Suns.

The 7-footer was with the Suns during the preseason and averaged 3.7 points and 4.3 rebounds in six games. He had 10 points and 13 rebounds in an Oct. 13 preseason game against the Houston Rockets.

Barron also appeared in 12 games for the Suns during the 2010-11 season. The eighth-year NBA veteran's other career stops include the New York Knicks, Miami Heat, Milwaukee Bucks, Portland Trail Blazers, Golden State Warriors and Washington Wizards.

The procedure was performed by Dr. William Meyers at the Vincera Institute. Kings coach George Karl said there were no complications.

The 27-year-old Collison will start rehab with the goal that he can return in six weeks. He will be re-evaluated at that time, but there is some doubt that he will be able to play again this season.

In 45 games this season, Collison is averaging 16.1 points, a team-leading 5.6 assists and 1.5 steals. He was injured during the first half of Sacramento's game against the Dallas Mavericks on Feb. 5.

The NBA on Tuesday fined Phoenix center Alex Len and Miami center Hassan Whiteside for their roles in an altercation during Monday's game between the Suns and Heat.

Len was fined $20,000 for initiating the altercation and trying to take Whiteside to the floor. Whiteside was fined $15,000 for escalating the incident by wrestling Len to the floor.

The NBA also fined Suns forward Markieff Morris $15,000 for his Flagrant 2 for making excessive contact above the shoulders with Heat guard Goran Dragic.

The incident involving Len and Whiteside occurred with 4:26 remaining in the third quarter of the Heat's 115-98 win.

The incident involving Morris occurred with 8:43 remaining in the third quarter.

If oddsmakers are correct, Cleveland's title drought will be coming to an end this year, according to CBSSports.com

Bovada.lv has released odds and the Cavaliers and Golden State Warriors are favored to play for the title with LeBron James having the best chance to take home the hardware and win the city's first championship since 1964.

Heading into Tuesday night's games, Cleveland sits in the fourth spot in the Eastern Conference trailing the Atlanta Hawks, Toronto Raptors and Chicago Bulls. But with James playing at an MVP level, Bovada says the Cavaliers are going to be difficult to beat.

The Hawks, who have a comfortable lead as the No. 1 seed in the Eastern Conference, come in second behind the Cavs to win the conference.

Bovada believes Oklahoma City will be a force to contend with once the postseason begins. Currently in the eighth and final spot in the Western Conference, the Thunder will give the Warriors a run for the Western title, Bovada said.

Colorado Avalanche forwards Cody McLeod and Gabriel Landeskog each have been fined the maximum amounts allowable under the Collective Bargaining Agreement for their respective actions during the final seconds of their Feb. 28 against Minnesota.

The NHL announced the punishment Tuesday. McLeod has been fined $3,091.40 for entering the game on a legal line change for the purpose of starting an altercation with 8.1 seconds remaining in regulation. Landeskog was fined $5,000.

Off a center ice faceoff, McLeod bodychecked Minnesota center Mikael Granlund and then engaged in a fight with Wild forward Charlie Coyle. McLeod was assessed a minor penalty for unsportsmanlike conduct, a major penalty for fighting and a misconduct penalty.

Landeskog has been fined for throwing a punch at Wild forward Mikko Koivu with 3.3 seconds remaining in regulation. Landeskog was assessed a misconduct penalty. Both players were on their team's bench.

---The Detroit Red Wings assigned right winger Teemu Pulkkinen to the AHL's Grand Rapids Griffins after 12 games with the NHL club.

Pulkkinen scored two goals on 27 shots on goal. He was leading the AHL in both goals (30) and points (57) when he was recalled from Grand Rapids last month and still sits first and second in those categories, respectively.

---The Calgary Flames assigned center Markus Granlund to the Adirondack Flames of the American Hockey League.

Granlund has five goals and eight assists in 37 games for Calgary this season, and six goals and six assists in 14 games for Adirondack. The 21-year-old was a second-round pick in 2011 and has played in 44 career NHL games.

This is the fourth stint with the Sabres this season for Grigorenko. He has one goal and one assist in 12 games so far this season. In Rochester, Grigorenko has appeared in 38 games in 2014-15 and has tallied 31 points.

Schaller debuted Nov. 29 in Montreal with the Sabres and was recalled for the third time this season. He leads the Americans with 15 goals and ranks second on the club with 40 points in 55 games.

D'Amigo was acquired from Columbus on Dec. 16, 2014, and will make his debut with the Sabres. He has 26 points (nine goals) in 59 AHL games this season, including 19 (six goals) in 31 games since joining the Americans.

---The Philadelphia Flyers signed left wingerTyrell Goulbourne to a three-year, entry-level contract on Tuesday.

The 21-year-old Goulbourne, a third-round pick by the Flyers in the 2013 NHL Draft, has spent five seasons with Kelowna in the Western Hockey League. This season, he has 17 goals and 21 assists in 55 games. In 268 career games for Kelowna, Goulbourne has logged 55 goals, 63 assists and 454 penalty minutes.

---The Anaheim Ducks recalled forward Chris Wagner from Norfolk of the American Hockey League on Tuesday.

The 23-year-old Wagner has played in three games for the Ducks this season and has two penalty minutes. He made his NHL debut in October. The 2010 fifth-round draft pick has 26 points and 54 penalty minutes in 41 games this season for Norfolk.

Teams headed in opposite directions in regards to the postseason meet Wednesday when the New Orleans Pelicans host the Detroit Pistons. The Pelicans, despite playing without All-Star Anthony Davis (shoulder), have won five of their last six games and are one game behind injury-riddled Oklahoma City for the eighth spot in the West. The Pistons have lost three in a row, including at home to lowly New York, and now play seven games in the next 11 days with six being on the road.New Orleans, seeking its first playoff appearance since 2011, is coming off a 102-93 loss at Dallas on Monday, but starting with the Detroit game, the club plays five of its next seven at home with Memphis and Milwaukee being the only teams above .500. "We are definitely looking forward to going home," guard Eric Gordon told reporters of the Pelicans, who are 20-10 on their own floor. "We are a good home team and it's going to be good to play at home for sure." On the other hand, Detroit, which is looking up at five teams for the last two berths in the Eastern Conference playoffs, is playing its second road game in a stretch of seven of eight away from The Palace at Auburn Hills that includes upcoming games against Houston, Golden State and Portland.TV: 8 p.m. ET, FSN Detroit, FSN New OrleansABOUT THE PISTONS (23-36): Detroit has been off since a 99-95 loss at Washington on Saturday in which it fought back from a 21-point deficit after yielding 37 points on 66.7 percent shooting in the first quarter. "We play the scoreboard. We play the standings. If we're underdogs and desperate, we play great," Pistons coach Stan Van Gundy told reporters. "I don't know if its pressure when we're ahead and we can't handle it or what, but we don't play the same way when we are in front. That's got to change." Greg Monroe had 21 points and 10 rebounds and rookie Spencer Dinwiddie added 20 points on 8-of-14 shooting and eight assists off the bench. Detroit is 6-9 since point guard Brandon Jennings went down for the season with an Achilles injury.ABOUT THE PELICANS (32-28): Norris Cole scored 19 points and Gordon added 18 as New Orleans had its season-high five-game win streak snapped at Dallas, one night after winning in Denver. "I've got no complaints about our team tonight. The guys competed their tails off," Pelicans coach Monty Williams told reporters. "We just came off the toughest back-to-back in the league - any time you go to Denver, or leave Denver and have a back-to-back, you'r e dealing with a lot." Cole has scored in double figures in five of his first six games since being acquired from Miami and center Alexis Ajinca is averaging 14.6 points on 69.8 percent shooting and 7.8 rebounds in just 23 minutes over his last five games.BUZZER BEATERS1. New Orleans has won five straight in the series, including a 105-94 home triumph on Jan. 14 in which Davis and F Ryan Anderson combined for 44 points. 2. The Pistons have eight games remaining against the five teams they are competing against for a playoff spot, including three with the Charlotte Hornets. 3. Pistons PG Reggie Jackson has scored 25 points on 9-of-36 shooting in his last two games with 12 assists and six turnovers after scoring 39 points and handing out 14 assists in his first two games with the club.PREDICTION: Pelicans 105, Pistons 94